Hi,
Good day.
Our customer wants to use the CD74HCT174 and they have the following question:
1) what is the minimum voltage required for the pin CP (Clock) when 5V is given to VDD?
2) In Page number 5 of the datasheet it has mentioned that Fmax ( Clock Frequency) is 30 MHz, Can it be used @ 25 MHz with 5V VDD?
Can you please help us with this? Thank you.
Regards,
Cedrick
Hi Cedrick,
1) what is the minimum voltage required for the pin CP (Clock) when 5V is given to VDD?
For a LOW input, the voltage must be less than VIL, and for a HIGH input, the voltage must be greater than VIH.
2) In Page number 5 of the datasheet it has mentioned that Fmax ( Clock Frequency) is 30 MHz, Can it be used @ 25 MHz with 5V VDD?
For the CD74HCT174, the maximum clock frequency is at least 20 MHz at 6V from -40C to 85C.
We cannot guarantee that the device will operate at 5V with a 25 MHz input, however it is very likely that it would work.
